How to show only the child values of a hierarchy with conditional background coloring

[JL0101]

Hi,

Hi, I have created a hierarchy (powerbi built in hierachy creator) and put it into a matrix visual with condtional background color formating (using field value). I only want to show the colors for hierachyy X.X.X.X not X.X.X. As it does not make sense to roll up the values to the parent. however when I collapse from X.X.X.X it automatically rolls up the colour (see below). 

M-key is a measure using 

M_Color = IF(ISINSCOPE('EI'[NRM1Level4_ETIM]),CALCULATE(SELECTEDVALUE('NRM1_Level_Colours'[ColorRgb]))) 

However this code is not working, any advice on this would be great.